Commit | Line | Data |
---|---|---|
015a42b4 | 1 | /* Generic code for supporting multiple C++ ABI's |
06c4d4dc | 2 | |
0b302171 | 3 | Copyright (C) 2001-2003, 2005-2012 Free Software Foundation, Inc. |
015a42b4 JB |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
015a42b4 JB |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
015a42b4 JB |
19 | |
20 | #include "defs.h" | |
21 | #include "value.h" | |
22 | #include "cp-abi.h" | |
fe1f4a5e | 23 | #include "command.h" |
7093c834 | 24 | #include "exceptions.h" |
fe1f4a5e DJ |
25 | #include "gdbcmd.h" |
26 | #include "ui-out.h" | |
8af8e3bc | 27 | #include "gdb_assert.h" |
309367d4 | 28 | #include "gdb_string.h" |
015a42b4 | 29 | |
fe1f4a5e | 30 | static struct cp_abi_ops *find_cp_abi (const char *short_name); |
015a42b4 | 31 | |
fe1f4a5e DJ |
32 | static struct cp_abi_ops current_cp_abi = { "", NULL }; |
33 | static struct cp_abi_ops auto_cp_abi = { "auto", NULL }; | |
015a42b4 | 34 | |
fe1f4a5e DJ |
35 | #define CP_ABI_MAX 8 |
36 | static struct cp_abi_ops *cp_abis[CP_ABI_MAX]; | |
37 | static int num_cp_abis = 0; | |
015a42b4 JB |
38 | |
39 | enum ctor_kinds | |
40 | is_constructor_name (const char *name) | |
41 | { | |
42 | if ((current_cp_abi.is_constructor_name) == NULL) | |
8a3fe4f8 | 43 | error (_("ABI doesn't define required function is_constructor_name")); |
015a42b4 JB |
44 | return (*current_cp_abi.is_constructor_name) (name); |
45 | } | |
46 | ||
47 | enum dtor_kinds | |
48 | is_destructor_name (const char *name) | |
49 | { | |
50 | if ((current_cp_abi.is_destructor_name) == NULL) | |
8a3fe4f8 | 51 | error (_("ABI doesn't define required function is_destructor_name")); |
015a42b4 JB |
52 | return (*current_cp_abi.is_destructor_name) (name); |
53 | } | |
54 | ||
55 | int | |
56 | is_vtable_name (const char *name) | |
57 | { | |
58 | if ((current_cp_abi.is_vtable_name) == NULL) | |
8a3fe4f8 | 59 | error (_("ABI doesn't define required function is_vtable_name")); |
015a42b4 JB |
60 | return (*current_cp_abi.is_vtable_name) (name); |
61 | } | |
62 | ||
63 | int | |
64 | is_operator_name (const char *name) | |
65 | { | |
66 | if ((current_cp_abi.is_operator_name) == NULL) | |
8a3fe4f8 | 67 | error (_("ABI doesn't define required function is_operator_name")); |
015a42b4 JB |
68 | return (*current_cp_abi.is_operator_name) (name); |
69 | } | |
70 | ||
1514d34e | 71 | int |
8af8e3bc PA |
72 | baseclass_offset (struct type *type, int index, const gdb_byte *valaddr, |
73 | int embedded_offset, CORE_ADDR address, | |
74 | const struct value *val) | |
1514d34e | 75 | { |
8af8e3bc PA |
76 | volatile struct gdb_exception ex; |
77 | int res = 0; | |
78 | ||
79 | gdb_assert (current_cp_abi.baseclass_offset != NULL); | |
80 | ||
81 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
82 | { | |
83 | res = (*current_cp_abi.baseclass_offset) (type, index, valaddr, | |
84 | embedded_offset, | |
85 | address, val); | |
86 | } | |
87 | ||
88 | if (ex.reason < 0 && ex.error == NOT_AVAILABLE_ERROR) | |
89 | throw_error (NOT_AVAILABLE_ERROR, | |
90 | _("Cannot determine virtual baseclass offset " | |
91 | "of incomplete object")); | |
92 | else if (ex.reason < 0) | |
93 | throw_exception (ex); | |
94 | else | |
95 | return res; | |
1514d34e DJ |
96 | } |
97 | ||
e933e538 | 98 | struct value * |
aff410f1 MS |
99 | value_virtual_fn_field (struct value **arg1p, |
100 | struct fn_field *f, int j, | |
fe1f4a5e | 101 | struct type *type, int offset) |
015a42b4 JB |
102 | { |
103 | if ((current_cp_abi.virtual_fn_field) == NULL) | |
104 | return NULL; | |
aff410f1 MS |
105 | return (*current_cp_abi.virtual_fn_field) (arg1p, f, j, |
106 | type, offset); | |
015a42b4 | 107 | } |
1514d34e | 108 | |
015a42b4 | 109 | struct type * |
aff410f1 MS |
110 | value_rtti_type (struct value *v, int *full, |
111 | int *top, int *using_enc) | |
015a42b4 | 112 | { |
7093c834 | 113 | struct type *ret = NULL; |
bfd189b1 | 114 | volatile struct gdb_exception e; |
c5504eaf | 115 | |
015a42b4 JB |
116 | if ((current_cp_abi.rtti_type) == NULL) |
117 | return NULL; | |
7093c834 PP |
118 | TRY_CATCH (e, RETURN_MASK_ERROR) |
119 | { | |
120 | ret = (*current_cp_abi.rtti_type) (v, full, top, using_enc); | |
121 | } | |
122 | if (e.reason < 0) | |
123 | return NULL; | |
124 | return ret; | |
015a42b4 JB |
125 | } |
126 | ||
0d5de010 | 127 | void |
aff410f1 MS |
128 | cplus_print_method_ptr (const gdb_byte *contents, |
129 | struct type *type, | |
0d5de010 DJ |
130 | struct ui_file *stream) |
131 | { | |
132 | if (current_cp_abi.print_method_ptr == NULL) | |
133 | error (_("GDB does not support pointers to methods on this target")); | |
134 | (*current_cp_abi.print_method_ptr) (contents, type, stream); | |
135 | } | |
136 | ||
137 | int | |
ad4820ab | 138 | cplus_method_ptr_size (struct type *to_type) |
0d5de010 DJ |
139 | { |
140 | if (current_cp_abi.method_ptr_size == NULL) | |
141 | error (_("GDB does not support pointers to methods on this target")); | |
ad4820ab | 142 | return (*current_cp_abi.method_ptr_size) (to_type); |
0d5de010 DJ |
143 | } |
144 | ||
145 | void | |
ad4820ab UW |
146 | cplus_make_method_ptr (struct type *type, gdb_byte *contents, |
147 | CORE_ADDR value, int is_virtual) | |
0d5de010 DJ |
148 | { |
149 | if (current_cp_abi.make_method_ptr == NULL) | |
150 | error (_("GDB does not support pointers to methods on this target")); | |
ad4820ab | 151 | (*current_cp_abi.make_method_ptr) (type, contents, value, is_virtual); |
0d5de010 DJ |
152 | } |
153 | ||
b18be20d | 154 | CORE_ADDR |
aff410f1 MS |
155 | cplus_skip_trampoline (struct frame_info *frame, |
156 | CORE_ADDR stop_pc) | |
b18be20d DJ |
157 | { |
158 | if (current_cp_abi.skip_trampoline == NULL) | |
159 | return 0; | |
52f729a7 | 160 | return (*current_cp_abi.skip_trampoline) (frame, stop_pc); |
b18be20d DJ |
161 | } |
162 | ||
0d5de010 | 163 | struct value * |
aff410f1 MS |
164 | cplus_method_ptr_to_value (struct value **this_p, |
165 | struct value *method_ptr) | |
0d5de010 DJ |
166 | { |
167 | if (current_cp_abi.method_ptr_to_value == NULL) | |
168 | error (_("GDB does not support pointers to methods on this target")); | |
169 | return (*current_cp_abi.method_ptr_to_value) (this_p, method_ptr); | |
170 | } | |
171 | ||
41f1b697 DJ |
172 | int |
173 | cp_pass_by_reference (struct type *type) | |
174 | { | |
175 | if ((current_cp_abi.pass_by_reference) == NULL) | |
176 | return 0; | |
177 | return (*current_cp_abi.pass_by_reference) (type); | |
178 | } | |
179 | ||
fe1f4a5e DJ |
180 | /* Set the current C++ ABI to SHORT_NAME. */ |
181 | ||
182 | static int | |
183 | switch_to_cp_abi (const char *short_name) | |
184 | { | |
185 | struct cp_abi_ops *abi; | |
186 | ||
187 | abi = find_cp_abi (short_name); | |
188 | if (abi == NULL) | |
189 | return 0; | |
190 | ||
191 | current_cp_abi = *abi; | |
192 | return 1; | |
193 | } | |
194 | ||
195 | /* Add ABI to the list of supported C++ ABI's. */ | |
196 | ||
015a42b4 | 197 | int |
fe1f4a5e | 198 | register_cp_abi (struct cp_abi_ops *abi) |
015a42b4 | 199 | { |
fe1f4a5e DJ |
200 | if (num_cp_abis == CP_ABI_MAX) |
201 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
202 | _("Too many C++ ABIs, please increase " |
203 | "CP_ABI_MAX in cp-abi.c")); | |
fe1f4a5e | 204 | |
015a42b4 JB |
205 | cp_abis[num_cp_abis++] = abi; |
206 | ||
207 | return 1; | |
fe1f4a5e DJ |
208 | } |
209 | ||
210 | /* Set the ABI to use in "auto" mode to SHORT_NAME. */ | |
015a42b4 | 211 | |
fe1f4a5e DJ |
212 | void |
213 | set_cp_abi_as_auto_default (const char *short_name) | |
214 | { | |
215 | char *new_longname, *new_doc; | |
216 | struct cp_abi_ops *abi = find_cp_abi (short_name); | |
217 | ||
218 | if (abi == NULL) | |
219 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 220 | _("Cannot find C++ ABI \"%s\" to set it as auto default."), |
fe1f4a5e DJ |
221 | short_name); |
222 | ||
223 | if (auto_cp_abi.longname != NULL) | |
224 | xfree ((char *) auto_cp_abi.longname); | |
225 | if (auto_cp_abi.doc != NULL) | |
226 | xfree ((char *) auto_cp_abi.doc); | |
227 | ||
228 | auto_cp_abi = *abi; | |
229 | ||
230 | auto_cp_abi.shortname = "auto"; | |
0dfdb8ba | 231 | new_longname = xstrprintf ("currently \"%s\"", abi->shortname); |
fe1f4a5e DJ |
232 | auto_cp_abi.longname = new_longname; |
233 | ||
0dfdb8ba | 234 | new_doc = xstrprintf ("Automatically selected; currently \"%s\"", |
049742da | 235 | abi->shortname); |
fe1f4a5e DJ |
236 | auto_cp_abi.doc = new_doc; |
237 | ||
238 | /* Since we copy the current ABI into current_cp_abi instead of | |
239 | using a pointer, if auto is currently the default, we need to | |
240 | reset it. */ | |
241 | if (strcmp (current_cp_abi.shortname, "auto") == 0) | |
242 | switch_to_cp_abi ("auto"); | |
015a42b4 JB |
243 | } |
244 | ||
fe1f4a5e DJ |
245 | /* Return the ABI operations associated with SHORT_NAME. */ |
246 | ||
247 | static struct cp_abi_ops * | |
248 | find_cp_abi (const char *short_name) | |
015a42b4 JB |
249 | { |
250 | int i; | |
fe1f4a5e | 251 | |
015a42b4 | 252 | for (i = 0; i < num_cp_abis; i++) |
fe1f4a5e DJ |
253 | if (strcmp (cp_abis[i]->shortname, short_name) == 0) |
254 | return cp_abis[i]; | |
255 | ||
256 | return NULL; | |
015a42b4 JB |
257 | } |
258 | ||
fe1f4a5e DJ |
259 | /* Display the list of registered C++ ABIs. */ |
260 | ||
261 | static void | |
262 | list_cp_abis (int from_tty) | |
263 | { | |
79a45e25 | 264 | struct ui_out *uiout = current_uiout; |
fe1f4a5e DJ |
265 | struct cleanup *cleanup_chain; |
266 | int i; | |
fe1f4a5e | 267 | |
c5504eaf | 268 | ui_out_text (uiout, "The available C++ ABIs are:\n"); |
aff410f1 MS |
269 | cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout, |
270 | "cp-abi-list"); | |
fe1f4a5e DJ |
271 | for (i = 0; i < num_cp_abis; i++) |
272 | { | |
273 | char pad[14]; | |
274 | int padcount; | |
275 | ||
276 | ui_out_text (uiout, " "); | |
277 | ui_out_field_string (uiout, "cp-abi", cp_abis[i]->shortname); | |
278 | ||
279 | padcount = 16 - 2 - strlen (cp_abis[i]->shortname); | |
280 | pad[padcount] = 0; | |
281 | while (padcount > 0) | |
282 | pad[--padcount] = ' '; | |
283 | ui_out_text (uiout, pad); | |
284 | ||
285 | ui_out_field_string (uiout, "doc", cp_abis[i]->doc); | |
286 | ui_out_text (uiout, "\n"); | |
287 | } | |
288 | do_cleanups (cleanup_chain); | |
289 | } | |
290 | ||
291 | /* Set the current C++ ABI, or display the list of options if no | |
292 | argument is given. */ | |
293 | ||
294 | static void | |
295 | set_cp_abi_cmd (char *args, int from_tty) | |
296 | { | |
297 | if (args == NULL) | |
298 | { | |
299 | list_cp_abis (from_tty); | |
300 | return; | |
301 | } | |
302 | ||
303 | if (!switch_to_cp_abi (args)) | |
8a3fe4f8 | 304 | error (_("Could not find \"%s\" in ABI list"), args); |
fe1f4a5e DJ |
305 | } |
306 | ||
307 | /* Show the currently selected C++ ABI. */ | |
308 | ||
309 | static void | |
310 | show_cp_abi_cmd (char *args, int from_tty) | |
311 | { | |
79a45e25 PA |
312 | struct ui_out *uiout = current_uiout; |
313 | ||
fe1f4a5e DJ |
314 | ui_out_text (uiout, "The currently selected C++ ABI is \""); |
315 | ||
316 | ui_out_field_string (uiout, "cp-abi", current_cp_abi.shortname); | |
317 | ui_out_text (uiout, "\" ("); | |
318 | ui_out_field_string (uiout, "longname", current_cp_abi.longname); | |
319 | ui_out_text (uiout, ").\n"); | |
320 | } | |
321 | ||
b9362cc7 AC |
322 | extern initialize_file_ftype _initialize_cp_abi; /* -Wmissing-prototypes */ |
323 | ||
fe1f4a5e DJ |
324 | void |
325 | _initialize_cp_abi (void) | |
326 | { | |
327 | register_cp_abi (&auto_cp_abi); | |
328 | switch_to_cp_abi ("auto"); | |
329 | ||
ac74f770 MS |
330 | add_cmd ("cp-abi", class_obscure, set_cp_abi_cmd, _("\ |
331 | Set the ABI used for inspecting C++ objects.\n\ | |
332 | \"set cp-abi\" with no arguments will list the available ABIs."), | |
fe1f4a5e DJ |
333 | &setlist); |
334 | ||
335 | add_cmd ("cp-abi", class_obscure, show_cp_abi_cmd, | |
aff410f1 MS |
336 | _("Show the ABI used for inspecting C++ objects."), |
337 | &showlist); | |
fe1f4a5e | 338 | } |